<?php


    $rating = new ratings($_POST['widget_id']);
    
    
    isset($_POST['fetch']) ? $rating->get_ratings() : $rating->vote();

class ratings {
    
    var $data_file = './ratings.data.txt';
    private $widget_id;
    private $data = array();
    
    
function __construct($wid) {
    
    $this->widget_id = $wid;

    $all = file_get_contents($this->data_file);
    
    if($all) {
        $this->data = unserialize($all);
    }
}
public function get_ratings() {
    if($this->data[$this->widget_id]) {
        echo json_encode($this->data[$this->widget_id]);
    }
    else {
        $data['widget_id'] = $this->widget_id;
        $data['number_votes'] = 0;
        $data['total_points'] = 0;
        $data['dec_avg'] = 0;
        $data['whole_avg'] = 0;
        echo json_encode($data);
    } 
}
public function vote() {
    
    # Get the value of the vote
    preg_match('/star_([1-5]{1})/', $_POST['clicked_on'], $match);
    $vote = $match[1];
    
    $ID = $this->widget_id;
    # Update the record if it exists
    if($this->data[$ID]) {
        $this->data[$ID]['number_votes'] += 1;
        $this->data[$ID]['total_points'] += $vote;
    }
    # Create a new one if it doesn't
    else {
        $this->data[$ID]['number_votes'] = 1;
        $this->data[$ID]['total_points'] = $vote;
    }
    
    $this->data[$ID]['dec_avg'] = round( $this->data[$ID]['total_points'] / $this->data[$ID]['number_votes'], 1 );
    $this->data[$ID]['whole_avg'] = round( $this->data[$ID]['dec_avg'] );
        
        
    file_put_contents($this->data_file, serialize($this->data));
    $this->get_ratings();
}

# ---
# end class
}

?>